John mckeolst



(No Model.)

J. MoKEON.

PIN RAIL ATTACHMENT FOR VESSELS.

No. 360,535. Patented Apr. 5, 1887.

0&1 fiQ/ m o N. PETERS. PholoLflMgraphm Wanhinglvm D-C UNITED STATESJOHN MoKEON,

PATENT OFFICE.

OF SAN FRANCI$CO, CALIFORNIA.

PIN-RAIL ATTACHMENT FOR VESSELS.

SPECIFICATION forming part of Letters Patent No. 360,535, dated April 5,1887.

Application filed June 25, 1886.

To all whom it may concern:

Be it known that I, J OHN MoKEoN, of the city and county of SanFrancisco, State of Oalifornia, have invented an Improvement in Pi n-Rail Attachments; and I hereby declare the following to be a full,clear, and exact description of the same.

My invention relates to that class of attachments to the pin-rails ofvessels which are used for guiding the lower end of the tackleknown asthe burton, which is-used in unloading; and myinvention consists incylinders or drums above and below the pin-rail, and secured thereto bymeans of a bolt passing through them and through the interveningpin-rail.

My invention further consists in the peculiar construction of thesedrums or cylinders and the means for fastening them in place, all ofwhich I shall hereinafter fully describe.

Vhen a vessel is being unloaded, there is rigged up to the end of theyard, which extends over the side of the vessel, a tackle which isusually called a burton. One end of this is attached to the fall of theengine or lifting rope, and it is customary to pass the other end backand forth over one or more Delaying-pins in the piirrail. The object ofthe burton is to guide the load over the side and slack it away. This isdone by the work men hauling I in the slack of the burton as the load ishoisted and slacking away again when in the proper position to belowered. Vhen the end of the burton is passed back and forth over thebelaying-pins, there is so much friction caused by its constant andnecessary slipping that the rope wears out in a very short time, and afresh one or a fresh piece has then to be rigged up. This occasionsconsiderable expense and loss of time. a

It is the object of my invention to obviate this diiiiculty by providinga bearingsurface, upon which the end of the burton is guided and slips,of such a character as to reduce the friction, and thereby save therope.

A. further object is to provide a device which can be readily andquickly placed in position.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a perspective view showing my at tachmentin position. Fig. 2 is a view of one of the drums.

Ais the pin-rail ofa vessel, having the usual Serial No. 206,274. (Nomodel.)

holes for the belaying-pins. B is a drum or cylinder standing in avertical position on the upper surface of the pin-rail.

B is a second drum or cylinder, in a vertical position, just under thepin-rail.

G is a bolt which passes down through the centers of both cylinders ordrums and through the belaying-pin hole in the intervening pinrail. Anut, c, on the end of the bolt, provides for the tightening up of bothdrums in such a way that they are bound firmly against is so small indiameter as to cause great friction. The drums or cylinders may bereadily removed by taking out their securing-bolt. They do not mar thepin-rail of the vessel, nor are they in the way when in use. In Fig 2 Ishow a peculiar construction of these drums or cylinders, which enablesme to properly adjust the position of either or both with relation tothe pin-rai]. The bolt 0, which holds them to the rail, may of coursepass through holes made in the center of the dru ms or cylindersthemselves, or they may be secured in the position shown by other means.If the hole is just of a diameter sufficient to receive the bolt, thenit is obvious that the drums will have but one positionnainely, in thevertical plane of the belaying-pin hole in the rail; but it is sometimesnecessary to set one or both farther out or in, and for this purpose Imake a large hole through the drums and fill in said hole with aremovable core, 1), preferably of wood. If, when about to be adjusted, Ifind that the drums should occupy the regular position 011 the piirrail,I bore the wooden core I) through the center; but if I find that one orboth of the drums must be set out or otherwise varied in position wit-hrelation to the hole in the pin-rail, I bore the wooden core to one sideof the center. In case but one drum has to be varied in position, I mayhave a bent or crooked bolt for securing the drums.

Having thus described my invention, what I claim as new, and desire tosecure by Letters 5 Patent, is-- 1. An attachment for the pin-rails ofvessels, consisting of independent cylinders or drums, and aboltpassingthrough them, whereby they are secured above and below the pin-rail,sub- IO stantially as herein described.

2. In combination with the pinrail of a vessel, the drums B B, above andbelow said rail, and the bolt 0, passing through said drums or cylindersand the hole in the intervening rail,

I 5 and secured by a nut, whereby said drums or cylinders are fastenedto the rail, substantially as herein described. I

3. The drums or cylinders B B, arranged above and below the pin-rail ofa vessel, said drums or cylinders having a removable core, 20 b, and thebolt 0 and nut c, by which the drums or cylinders are secured to thepin-rail, substantially as herein described.

In witness whereof I have hereunto set my hand.

J OHN MOKEON.

'Wi tnesses:

VIM. F. BOOTH, S. H. Nounsn.

